ued for PVC door and window profiles, porous threading tubes(four holes, six holes, seven holes etc.) extrusion. the production line according to different production section and mold, use different specification of the parallel(conical) double-screw extruder, and configure the corresponding vacuum table, hauling devuce, cutter, stacker,and other auxiliary equipments.Hosy extrusion capacity can be an hour betwwen 150-450kg optional.